Canceling REINDEX safe? - Mailing list pgsql-admin

Hello,

I wonder whether canceling a REINDEX of a database is safe ( PostgreSQL v9.2.7 ). In the server log there's just the
errormessage that the REINDEX statement has been canceled without details. 
Is the index that has been worked on when canceling okay or can it be incomplete or even get lost?

I don't see anything regarding this:
http://www.postgresql.org/docs/9.2/static/sql-reindex.html

Thank you very much in advance!

Best regards,

Peter